Record Details

Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia

CGSpace

View Archive Info
 
 
Field Value
 
Title Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia
 
Creator Hausller, K
Rao, Idupulapati M.
Schultze-Kraft, Rainer
Marschner, H
 
Subject feed crops
brachiaria ruziziensis
brachiaria dictyoneura
soil toxicity
acid soils
aluminium
growth
savannas
brachiaria ruziziensis
brachiaria dictyoneura
toxicidad del suelo
suelo ácido
aluminio
brotes
crecimiento
sabanas
 
Description Phosphorus (P) deficiency and aluminium (Al) toxicity are widespread in Oxisols of the tropical savannas of eastern Colombia. A field experiment was conducted to determine the effect of Al toxicity and P deficiency on plant growth and nutrient uptake of two Brachiaria species. To examine the influence of nutrient supply and lime on root and shoot growth, two levels of fertiliser application (low and high) were superimposed on the control, lime and gypsum treatments. Results from this field study showed that growth limitations of B. ruziziensis and B. dictyoneura (syn. B. humidicola) did not result from either P deficiency or Al toxicity. B. ruziziensis, despite lower root length, produced under the experimental conditions more shoot dry matter than B. dictyoneura with similar or greater P and Ca concentrations. Therefore, efficiency of Ca and/ or P uptake per unit root length was greater in B. ruziziensis than in B. dictyoneura. This ability of B. ruziziensis may contribute to its rapid establishment during the first year of pasture growth. Further studies are warranted to verify the apparent growth responses of these grasses to application of Ca on these soils.
Peer Review
 
Date 2014-10-02T08:33:14Z
2014-10-02T08:33:14Z
2006
 
Type Journal Article
 
Identifier 0049-4763
https://hdl.handle.net/10568/44093
 
Language en
 
Source Tropical Grasslands